Dec 02 03:23:58.312 INFO testing ShriekBob/rust-playground against 1.30.1 for beta-1.31-5
Dec 02 03:23:58.312 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-4/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/beta-1.31-5/1.30.1:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1.30.1 build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 03:23:58.771 INFO [stdout] 1d698eacd01c9710429465cd61bd1eb1496ed774cd377cd34e12359c62b05226
Dec 02 03:23:58.773 INFO running `"docker" "start" "-a" "1d698eacd01c9710429465cd61bd1eb1496ed774cd377cd34e12359c62b05226"`
Dec 02 03:24:00.187 INFO [stderr] usermod: no changes
Dec 02 03:24:00.269 INFO [stderr]    Compiling rust-playground v0.1.0 (/source)
Dec 02 03:24:00.315 INFO [stderr] error: Edition 2018 is unstable and only available for nightly builds of rustc.
Dec 02 03:24:00.315 INFO [stderr] 
Dec 02 03:24:00.318 INFO [stderr] error: Could not compile `rust-playground`.
Dec 02 03:24:00.318 INFO [stderr] 
Dec 02 03:24:00.318 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 03:24:00.319 INFO [stderr] su: No module specific data is present
Dec 02 03:24:01.225 INFO running `"docker" "inspect" "1d698eacd01c9710429465cd61bd1eb1496ed774cd377cd34e12359c62b05226"`
Dec 02 03:24:01.367 INFO running `"docker" "rm" "-f" "1d698eacd01c9710429465cd61bd1eb1496ed774cd377cd34e12359c62b05226"`
Dec 02 03:24:01.579 INFO [stdout] 1d698eacd01c9710429465cd61bd1eb1496ed774cd377cd34e12359c62b05226